1021264847 has 2 divisors, whose sum is σ = 1021264848. Its totient is φ = 1021264846.

The previous prime is 1021264843. The next prime is 1021264889. The reversal of 1021264847 is 7484621201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021264847 - 2² = 1021264843 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021264843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510632423 + 510632424.

It is an arithmetic number, because the mean of its divisors is an integer number (510632424).

Almost surely, 2^1021264847 is an apocalyptic number.

1021264847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021264847 is an equidigital number, since it uses as much as digits as its factorization.

1021264847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 1021264847 is about 31957.2346582116. The cubic root of 1021264847 is about 1007.0386238710.

The spelling of 1021264847 in words is "one billion, twenty-one million, two hundred sixty-four thousand, eight hundred forty-seven".